/*«Copyright 2006, 2007 Yann Arthur Nicolas»
 *www.merlinsource.com
 *yannart@gmail.com
 *
 * This file is part of a SJCP 5 practice set of classes.
 *
 * This SJCP 5 practice set of classes is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This SJCP 5 practice set of classes is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

package chapter6.staticblock;

import static java.lang.Math.PI;

public class Area {
    private static double mi_PI = PI;
    
    static{
        double PI = 3.1416d; //esto NO cuenta ya que es una variable de bloque
    }
    
    private Area(){}
    
    public static double circulo(double diametro){
        double radio = diametro / 2.0d;
        return mi_PI * radio * radio;
    }
    
    public static double cuadrado(double lado){
        return lado * lado;
    }
    
    public static double rectangulo(double ancho, double alto){
        return ancho * alto;
    }
    
    public static void main(String [] args){
        System.out.println(Area.circulo(5d));
        System.out.println(Area.cuadrado(5d));
        System.out.println(Area.rectangulo(2d, 3d));
    }
}
